Soda ash

Physical Nature: The appearance of fine white powder or crystal, shibuya taste. Relative density (25 ) is 2.532, melting point is 851 , specific heat is 1.042J / (g ) (20 ). Soluble in water, solubility in the largest of its 35.4 , slightly soluble in ethanol, insoluble in alcohol.

Its aqueous solution was alkaline hydrolysis, a certain degree of corrosion can be carried out with the acid and the reaction to generate the corresponding salts and release of carbon dioxide. Decompose at high temperatures to produce sodium oxide and carbon dioxide.

Long-term exposure to the air in the air can absorb moisture and sodium bicarbonate to generate carbon dioxide and form lumps.